Jet Propulsion Laboratory
California Institute of Technology
NASA JPL-UC Irvine glaciologist Eric Rignot explains how glaciers in West Antarctica are changing.
West Antarctic Collapse
GRACE Flight Trajectory
GRACE Flight Trajectory
Work begins to build NASA’s twin satellites, under construction by Airbus Defense and Space.
Build Commences on GRACE-FO Satellites
Many of today’s most pressing climate science challenges hinge on knowing how and where water is moving on Earth. GRACE-FO will continue the successful partnership between NASA and the German Resea...
GRACE-FO Launch Press Kit
Illustration of GRACE-FO separating from Falcon 9 rocket after launch.
GRACE-FO Separating from Rocket After Launch
The GRACE-FO satellites were assembled by Airbus Defence and Space in Germany. The photo shows one of the satellites in the testing facility of IABG, an Airbus subcontractor, in Munich (view 2).
GRACE-FO Satellites During Testing (View 2)
GRACE-FO in a protective shipping container arriving at a new facility at Vandenberg Air Force Base, California.
GRACE-FO Arrives at Vandenberg
For 15 years, the GRACE mission has unlocked mysteries of how water moves around our planet. It gave us the first view of underground aquifers from space, and shows how fast polar ice sheets and mo...
15 Years of GRACE Earth Observations
GRACE Follow-On will test a Laser Ranging Interferometer to measure intersatellite distance changes with unprecedented precision.
Laser Ranging Interferometer
The two GRACE-FO satellites are seen from GFZ’s Satellite Laser Ranging Station in Potsdam, Germany, on May 23, 2018 at 22:16 UTC and 22:17 UTC, respectively.
GRACE-FO Satellites From Potsdam
The NASA/German Research Centre for Geosciences GRACE Follow-On spacecraft launches onboard a SpaceX Falcon 9, May 22, 2018, from Vandenberg Air Force Base in California.
GRACE-FO Launches, Ocean View
A map of groundwater storage trends for Earth's 37 largest aquifers using GRACE data, showing depletion and replenishment in millimeters of water per year.
Map of Groundwater Storage Trends for Earth's 37 Largest Aquifers
Variations in water storage in the Tigris and Euphrates river basins from 2003 to 2009, measured by GRACE. Reds represent drier conditions, while blues represent wetter conditions. The majority of ...
Tigris and Euphrates Water Storage, 2003 to 2009
Measuring Earth's Gravity from Space poster
Measuring Earth's Gravity from Space Poster
The rocket carrying GRACE-FO lifts off into a blue sky, with the Pacific Ocean beneath it.
GRACE-FO Launch, Sky and Sea
GRACE Follow-On (GRACE-FO) continues the legacy of GRACE, tracking Earth’s water movement and surface mass changes across the planet. Monitoring changes in ice sheets and glaciers, near-surface and...
GRACE-FO Mission Brochure
The GRACE-FO satellites are nearly identical. The Microwave Interferometer (MWI) will measure the minute variations in distance between the spacecraft.
GRACE-FO mission logo
Changes in total water storage on Earth in 2007, as measured by GRACE.
Water Storage on Earth in 2007
The GRACE Intermediate Field 48 (GIF48 from UT-CSR) field model is an improved mean gravity field that combines GRACE observations and terrestrial gravity information.
Static Gravity Field Anomalies
Flames from the SpaceX Falcon 9 rocket launching GRACE-FO into orbit.
The Laser Ranging Interferometer instrument.
Laser Ranging Interferometer
The twin satellites of NASA's Gravity Recovery and Climate Experiment Follow-on, or GRACE-FO, will track the movement of water around Earth. This short video explains how and why it's important.
Why Is GRACE-FO So Important?
The GRACE-FO satellites, attached to turntable fixtures, at the Astrotech Space Operations processing facility at Vandenberg Air Force Base, California (view 1).
GRACE-FO Satellites, Attached to Turntable Fixtures
A simplified example of how the distance between the GRACE-FO satellites changes as they pass from the Caribbean Sea across Colombia and Peru.
How GRACE-FO Measures Gravity
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Scientists have gained new insights into the processes that have driven ocean level variations for over a century, helping us prepare for the rising seas of the future.
NASA-led Study Reveals the Causes of Sea Level Rise Since 1900
Continuous monitoring of glaciers and ice caps has provided unprecedented insights to global ice loss that could have serious socioeconomic impacts on some regions.
Ice Melt Linked to Accelerated Regional Freshwater Depletion
NASA researchers have developed new satellite-based, weekly global maps of soil moisture and groundwater wetness conditions and one- to three-month U.S. forecasts of each product.
NASA, University of Nebraska Release New Global Groundwater Maps and U.S. Drought Forecasts
During the exceptionally warm Arctic summer of 2019, Greenland lost 600 billion tons of ice - enough to raise global sea levels by nearly a tenth of an inch (2.2 millimeters) in just two months, a new study shows.
GRACE, GRACE-FO Satellite Data Track Ice Loss at the Poles
North America was almost entirely above its long-term average in mass in May 2019, due to Midwestern flooding, with the runoff raising the Great Lakes to record levels.
GRACE-FO Shows the Weight of Midwestern Floods
GRACE-FO releases first Level-2 data products, including nine monthly gravity fields and corresponding atmosphere and ocean dealiasing background model data.
GRACE-FO First Gravity Field Data Now Available